Dieter Rahmadiawan, Hairul Abral, Ilham Chayri Iby, Hyun-Joong Kim, Kwang-Hyun Ryu, Ho-Wook Kwack, Muhammad Razan Railis, Eni Sugiarti, Ahmad Novi Muslimin, Dian Handayani, Khiky Dwinatrana, Shih-Chen Shi, Rahadian Zainul, Rahmat Azis Nabawi
The physical and mechanical properties of biopolymers can be improved by heating technologies. In this research, we improved the properties of Polyvinyl alcohol (PVA)/Uncaria gambir extract (UGE) blend films by post-heating method. After post-heating, the blend film exhibited higher resistance to UV light and improved contact angle performance, while water vapor permeability and moisture absorption decreased. The tensile strength and toughness of the PVA/UGE blend film with a post-heating duration of 40 min were 68.8 MPa and 57.7 MPa, respectively, an increase of 131 % and 127 %, compared to films without post-heating. This facile and cost-effective fabrication method, with environmentally friendly properties, can be applied to biodegradable PVA/UGE blend films to achieve desired properties for optical devices or food packaging materials. © 2024
Department of Mechanical Engineering, National Cheng Kung University (NCKU), Tainan, Taiwan; Department of Mechanical Engineering, Universitas Negeri Padang, West Sumatera, Padang, 25173, Indonesia; Laboratory of Nanoscience and Technology, Department of Mechanical Engineering, Andalas University, West Sumatera, Padang, 25163, Indonesia; Research Collaboration Center for Nanocellulose, BRIN-Andalas University, West Sumatera, Padang, 25163, Indonesia; Research Institute of Agriculture and Life Sciences, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul, 08826, South Korea; Department of Agriculture, Forestry and Bioresources, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul, 08826, South Korea; Department of Engineering Management, Batam Institute of Technology, Batam, 29425, Indonesia; Research Center for Biomass and Bioproducts, National Research and Innovation Agency (BRIN), Cibinong Science Center, West Java, 16911, Indonesia; Laboratory of Sumatran Biota, Faculty of Pharmacy, Andalas University, West Sumatera, Padang, 25163, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, West Sumatera, 25171, Indonesia
